Cutter-bar adjusting and locking means.



e. F. HOLLON. CUTTER BAR ADJUSTING AND LOCKlNG MEANS.

APPLICATION FILED OCT. 29. i9]?- 1,2so,47o. A Patnted Oct. 1, 191a;

INVENTOR WITNESSES A F/[UZZUIZ gWW y% (Sh-W.

Ara-omen Locking Means,

eiioner. r. HOLLON, or Waco, Texas.-

Curran-Ban Aninsr'nrs earn sesame means.

, Specification of Letters Patent.

'Iatented Oct. 1, 1918.

- "Application filed October as, ism. Serial No. lessee.

To all whom it may concern: Beit known that I, Grouse .F. Promos, a citizen of the United States, residing at Waco, in thecounty of McLennan and State of Texas, have invented new and useful Improvements in Cutter-Bar Adjusting and of which the following is a specification.

- This invention relates to means for adjusting and locking the cutter bars of lawn mowers, and the object is to provide, in connection with a lawn mower of the reel and cutter-bar type, improved means for ad justingthe cutter bar, such means includ'- ing ascrew passing through a rigid portion of the frame and through the cutter bar, the end'of the screw being .reduced for forming a shoulder and being provided with washers, which engage respectively the upper and lower surfaces of the bar..-

With the foregoing and other objects in view, the invention consists in thefnovel construction, combination' and arrange ment of elements hereinafter described and claimed.

In the accompanying drawings:

Figure 1 is a view in vertical section showing the reel and cutter bar in slevation.

Fig. 2 is-an enlarged view of: the adjustshown in section. x

The adjusting device herein described is designed fornsein' connection with a "pivotally mounted cutter bar carrying a knife which coiipera-tes with the reel of usual 'ing screw, the washerscarried thereby being commercial type oflawn mower.

The-reel is designated 10, a portion of the frame work is shown at 12 and the-ground roller is designated 14, being adjustably mounted as shown at 15,

A rigid transverse bar 16 of the frame is provided with a vertically arranged-and threaded aperture for the accommodation of the adjusting screw, the .shank of which is shown at 17. This shank is tlireaded from a point adjacent to the, head 18 to'the shoulder 19, and that portion ad acent-the head is engaged by a lock nut'20. v

The end portion of thescrew isof re duced diameter and is designated 21-, the diameter of this reduced portion being substantially the same or slightly less than the diameter of the aperture in the, cutter .a perfect fit should be bar22'. The pivotal mounting of the bar iast namedis shown at and the blade carried thereby is designated 24. A washer 25 encircles the reduced portion of the screw at a point adjacent to the shoulder 19 and engages the'upper surface of the cutter bar, an additional washer 26 being provided for engagement with the lower surface of said cutter, bar. In order to take up any play betwen the washersu25 and 26. or between the respective surfaces of the bar 22 and the washers, additional washers of leather. or hard rubber may be provided. A cotter- [pin 27 passes through an aperture in the end of the screw and engages washer 26.

In applying the adjusting v and locking. screw to a commercial type of lawn mower, .efl'ected in-order to prevent play or lostmotion between the screw and-the cutter bar 22 after adjustment has been secured. The adjustments made .in practice are so slight that the fit of the washers on the cutter bar and against shoulder 1%) and cutter pin 27 is sufiiciently snug 'to prevent looseplay. of the cutter bar and tight enough to hold the cutter bar rigidly in any adjustedposition. The head 18 of the screw may have any desired configuration I prefer to have flattened head as iil'ustra-ted in the drawings.

"What is claimed is:

The combination with a rigid member of the frame of a lawn mower and a pivotally mounted cutter bar, comprising a head, a threaded shank portion a reduced end portion on the end oikthe shank remote from the head, said reduced portion forming a shoulderand thereduced portion. having a smooth surface and-pass, ing freely through the cutter bar, a washer engaged by saidshoulder and bearing against the upper portion of the cutter bar, a washer surrounding the reduced portion and em gaging the lower. surface of the cutter bar, means for securing the washer last-.mentioned in position, and a lock nut carried by of an adjusting screw the shank of the screw and engaging'the upper surface of said; rigid member, said screw being operable by the head for ro- 

